document.write( "Question 317672: determine the domain and range and sketch the graph of the relations defined by $\"x=-4y%5E2\"$
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Algebra.Com's Answer #227496 by Edwin McCravy(20063) $\"\"$ $\"About$

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document.write( "Any number substituted for y will give a defined value for x,\r\n" );
document.write( "since any number may be squared and multiplied by 4 and an\r\n" );
document.write( "answer given. So y can be any number.  Therefore the range is\r\n" );
document.write( "\"all real numbers\" or \r\n" );
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document.write( "Range = \r\n" );
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document.write( "Solve for y\r\n" );
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document.write( "An even-root radical such as a square root radical\r\n" );
document.write( "cannot caontain a negative number in real mathematics.\r\n" );
document.write( "So what's under the radical must be greater than or equal 0:\r\n" );
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document.write( "So  which becomes \r\n" );
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document.write( "So the domain is   \r\n" );
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document.write( "To graph, choose x negative or zero so -x will be positive\r\n" );
document.write( "and be square-root-able, \r\n" );
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document.write( "  x |  y\r\n" );
document.write( " -------\r\n" );
document.write( "  0 |  0\r\n" );
document.write( " -4 | ą1 \r\n" );
document.write( "-16 | ą2\r\n" );
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document.write( "Edwin

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